TWM374652U - High reliability and long lifetime ac LED device - Google Patents

High reliability and long lifetime ac LED device Download PDF

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Publication number
TWM374652U
TWM374652U TW098218531U TW98218531U TWM374652U TW M374652 U TWM374652 U TW M374652U TW 098218531 U TW098218531 U TW 098218531U TW 98218531 U TW98218531 U TW 98218531U TW M374652 U TWM374652 U TW M374652U
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Taiwan
Prior art keywords
light
diode
rectifying
emitting diode
group
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TW098218531U
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Chinese (zh)
Inventor
Pei-Xuan Lan
Ren-Hua Yang
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Forward Electronics Co Ltd
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Application filed by Forward Electronics Co Ltd filed Critical Forward Electronics Co Ltd
Priority to TW098218531U priority Critical patent/TWM374652U/en
Priority to US12/591,762 priority patent/US20110084617A1/en
Priority to JP2009293652A priority patent/JP2011082475A/en
Publication of TWM374652U publication Critical patent/TWM374652U/en

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30Driver circuits
    • H05B45/37Converter circuits

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  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The present invention relates to a high reliability and long lifetime AC LED device, which comprises: an LED group, a rectifier diode group and an AC power. The LED group includes a plurality of LED micro-chips connected in series. The rectifier diode group includes four rectifier diodes. The AC power is electrically connected to the rectifier diode group, and the rectifier diode group is electrically connected to the LED group. The AC power includes a positive half-cycle voltage and a negative half-cycle voltage. The rectifier diode group enables the LED group to conduct both in positive and negative half-cycle voltage, so as to prevent the LED group from bearing high reverse bias voltage, and extend the light-emitting life and enhance the reliability.

Description

五、新型說明: 【新型所屬之技術領域】 本創作係關於一種發光二極體裝置,尤指一種適用於 交流電源之高可靠度及長使用期之交流發光二極體裝置。 【先前技術】 隨著發光二極體應用的日趨普及,目前業界已發展出 適合交流電源使用之交流發光二極體(ACLED)。交流發光 二極體可直接使用市電所提供的交流電源,已有效解決發 光二極體無法直接在交流電源下使用的問題。然而,目前 父流發光二極體於製程中仍存在有需要改進之課題。例 如,交流發光二極體之逆向偏壓,將造成發光二極體產生 逆向高壓漏電流。 習知的交流發光二極體,主要是採用橋式整流的架構 進行設計,例如圖1所示之交流發光二極體。如圖所示當 交流電源H)處於正週期時,發光二極體區段a、e、C將被; 通,此時發光二極體區段b、d係承受逆向偏壓;當交流電 源10處於負週期時,發光二極體區段b、e、d將被導通此 時發光二極體區段a、c係承受逆向偏壓。因此,在此一架 構中,發光二極體區段a、c、b、d係交替承受逆向偏壓。 當發光二極體所承受的逆向偏壓過大時,便會產生高逆向 偏壓漏電流,此一現象將導致發光二極體晶粒的擊穿現 象,或使整體發光壽命 '可靠度產生不穩定之影響。 其次,習知交流發光二極體的發光二極體區段並非同 時點亮,例如交流電源1 〇處於正週期時,僅發光二極體區 段a、e、C導通點亮,交流電源10處於負週期時,僅發光二 極體區段b、e、d導通點亮。因此’習知交流發光二極體之 架構只能有2/3之發光二極體區段被點亮,且由於習知交流 發光一極體之發光一極體區段係交替導通,而將有明暗之 變化而產生光源閃爍之現象。是故,確實有必要針對這些 問題進行改善。 【新型内容】 有鑑於此,本創作提供一種交流發光二極體裝置以 克服橋式架構之發光二極體晶粒所產生的逆偏高壓崩潰漏 電流現象及光源閃爍之現象。 本創作所提供之高可靠度及長使用期之交流發光二極 體裝置包括.一發光二極體組,係由複數個串接之發光二 極體微晶粒所組成,包含有一陽極及一陰極;一整流二極 體組,包括第一、第二、第三及第四整流二極體,該第一 整流二極體之陰極連接該第二整流二極體之陰極及該發光 二極體組之陽極,該第二整流二極體之陽極連接該第三整 流二極體之陰極,該第三整流二極體之陽極連接該第四整 流二極體之陽極及該發光二極體組之陰極,該第四整流二 極體之陰極連接該第一整流二極體之陽極;以及一交流電 源’其係電性連接至該整流二極體組之該第_整流二極體 之陽極及該第三整流二極體之陰極H該交流電源包 M374652 含有一正週期電源及一負週期電源,該整流二極體組係致 使該發光二極體組於該正週期電源及該負週期電源均被導 通0 【實施方式】 請一併參考圖2及圖3 ’圖2係本創作一較佳實施例之示 意圖,圖3係本創作一較佳實施例之系統架構圖。如圖所 示’本創作之高可靠度及長使用期之交流發光二極體裝置 包括一整流一極體組21、一發光二極體組22、及一交流電 源20。發光二極體組22係由多數個串接之發光二極體微晶 粒所組成’其較佳地包含48個串接之發光二極體微晶粒 2201〜2248,該48個發光二極體微晶粒“οι〜2248係製作在 一晶片5 1内。如圖4所示’該等發光二極體微晶粒 2201〜2248之佈局係為非矩陣式排列(圖4之a)、或矩陣式排 列(圖4之B)。 接著’請參考圖3及圖5,前述整流二極體組21包括有 四個整流二極體’分別為第一、第二、第三及第四整流二 極體211〜214,該整流二極體組21之第一至第四整流二極 體211〜214係為各別之二極體元件,此二極體元件為高壓 整流二極體。較佳地’該整流二極體組21及發光二極體組 22係共同整合於一封裝晶片3中,並由同一支架31進行固晶 打線。如圖所示’整流二極體組21之第一、第二、第三、 第四整流二極體2 1 1〜2 14以及發光二極體組22係設置於同 6 —支架31上,並且由一封膠32進行封裝,以共同形成一封 裝結構^ 請繼續參考圖2及圖3,本創作之發光二極體組22由48 個發光二極體微晶粒2201〜2248串接組成,其計算方式係 由發光二極體微晶粒2201〜2248之啟動電壓、整流二極體 211〜214之啟動電壓、及交流電源2〇之電壓計算而成。 於本實施例中,交流電源20所提供電壓為11〇伏特,係 為均方根值,其峰值為均方根值乘以根號二,亦即156伏 特。本實施例所提供之整流二極體其啟動電壓為1伏特,發 光一極體微晶粒其啟動電壓為3.2伏特◊當交流電源2〇處於 正週期時’電流係流經第一整流二極體2 π、發光二極體組 22、及第三整流二極體213 ;交流電源2〇處於負半週時,電 流係流經第二整流二極體212、發光二極體組22、及第四整 流二極體214。交流電源20於正、負週期其電流均流經兩個 整流二極體,故有2伏特的壓降,由此,可計算出發光二極 體組22所能包含的發光二極體微晶粒數目為: (156-1*2)/3.2=48,亦即可包含有48個發光二極體微晶粒。 48個發光二極體微晶粒2201〜2248串接後,係具有一 陽極22a及一陰極22b。第一整流二極體211之陰極21 lb係連 接第二整流二極體212之陰極212b及發光二極體組22之陽 極22a,第二整流二極體212之陽極212a係連接第三整流二 極體213之陰極213b,第三整流二極體213之陽極213a係連 接第四整流二極體214之陽極214a及發光二極體組22之陰 極22b,第四整流二極體214之陰極214b係連接第一整流二 M374652 極體211之陽極a。交流電源20則.電性連接至第一整流二極 體211之陽極211a及第三整流二極體213之陰極213b» 經由本創作所提供之高可靠度及長使用期之交流發光 二極體裝置’交流電源20處於正週期時,第一整流二極體 211及第二整流二極體213將被導通,故可使發光二極體組 22亦導通。同樣地’交流電源20處於負週期時,第二整流 二極體2 12及第四整流二極體214係被導通,故亦可使發光 二極體組22導通。是故,整流二極體組2 1係致使發光二極 體組22於正週期電源及負週期電源均能導通,以使發光二 極體組22之發光二極體微晶粒2201〜2248全數點亮。 其次,當交流電源20處於正週期時,電流係流經第一 整流二極體2U、發光二極體組22、及第三整流二極體213, 此時第二整流二極體212、第四整流二極體214並未導通, 將承受有逆向偏壓;交流電源2〇處於負半週時,電流係流 經第二整流二極體212、發光二極體組22、及第四整流二極 體214,此時第一整流二極體2n、第三整流二極體213並未 導通,將承受有逆向偏壓。 本創作所提供之高可靠度及長使用期之交流發光二 極體裝置’其整流二極體211〜214係能承受逆向偏壓達 600-1000伏特以上,同時其逆向漏電流可降低至數個y a 等級°是故’經由本創作所提供之整流二極體2丨丨〜2丨4, 可避免原交流發光二極體上橋式排列之發光二極體微晶粒 於逆偏尚壓的情況下所產生的逆偏高壓崩潰漏電流現象, 故可延長整體的發光壽命並提升其可靠度。 8 M374652 然而’上述實施例僅係為了方便說明而舉例而已,本 創作所主張之權利範圍自應以申請專利範圍所述為準, 非僅限於上述實施例。 【圖式簡單說明】 圖1係係習知交流發光二極體架構圖。 圖2係本創作一較佳實施例之示意圖。 圖3係本創作一較佳實施例之架構圖。 圖4(A)係本創作一較佳實施例之發光二極體微晶粒的非矩 陣排列示意圖。 圖4(B)係本創作一較佳實施例之發光二極體微晶粒的矩陣 排列示意圖。 圖5係本創作一較佳實施例之支架固晶打線示意圖。 【主要元件符號說明】 10,20 交流電源 a〜e 發光二極體區段 21 整流二極體組 22 發光二極體組 211-214 整流二極體 211a〜214a 整流二極體陽極 211 b〜214b整流二極體陰極 2201〜2248 發光二極體微晶 粒 22a 發光二極體組陽22b 發光二極體組陰 極 極 3 封裝晶片 31 支架 32 封膠 51 晶片 9V. New description: [New technical field] This creation is about a light-emitting diode device, especially an AC light-emitting diode device suitable for AC power supply with high reliability and long service life. [Prior Art] With the increasing popularity of light-emitting diode applications, AC light-emitting diodes (ACLEDs) suitable for AC power sources have been developed in the industry. The AC light-emitting diode can directly use the AC power supply provided by the mains, which has effectively solved the problem that the light-emitting diode cannot be directly used under AC power. However, there are still problems in the process of improving the current parent-emitting diodes in the process. For example, the reverse bias of the AC LED will cause a reverse high voltage leakage current in the LED. Conventional AC light-emitting diodes are primarily designed using a bridge-rectified architecture, such as the AC light-emitting diode shown in FIG. As shown in the figure, when the AC power source H) is in a positive cycle, the LED segments a, e, C will be turned on; at this time, the LED segments b, d are subjected to reverse bias; When the negative period is 10, the light-emitting diode segments b, e, and d will be turned on, and the light-emitting diode segments a and c are subjected to reverse bias. Therefore, in this configuration, the light-emitting diode segments a, c, b, and d are alternately subjected to reverse bias. When the reverse bias of the light-emitting diode is excessively large, a high reverse bias leakage current is generated, which may cause breakdown of the light-emitting diode crystal grains, or cause the overall light-emitting lifetime to be 'reliable. The impact of stability. Secondly, the light-emitting diode segments of the conventional AC light-emitting diodes are not lit at the same time. For example, when the AC power source 1 is in a positive cycle, only the LED segments a, e, and C are turned on, and the AC power source 10 is turned on. When in the negative cycle, only the light-emitting diode segments b, e, and d are turned on. Therefore, the structure of the conventional AC light-emitting diode can only be illuminated by two-thirds of the LED segments, and that the light-emitting diode segments of the conventional AC-emitting one-pole are alternately turned on. There is a change in brightness and darkness that causes the light source to flicker. Therefore, it is indeed necessary to improve on these issues. [New content] In view of this, the present invention provides an AC light-emitting diode device to overcome the phenomenon of reverse-voltage high-voltage collapse leakage current and light source flicker generated by the LED structure of the bridge structure. The high-reliability and long-life AC light-emitting diode device provided by the present invention comprises a light-emitting diode group consisting of a plurality of serially connected light-emitting diode micro-crystals, including an anode and a cathode. a cathode; a rectifying diode set including first, second, third, and fourth rectifying diodes, a cathode of the first rectifying diode connected to a cathode of the second rectifying diode and the light emitting diode The anode of the body, the anode of the second rectifying diode is connected to the cathode of the third rectifying diode, and the anode of the third rectifying diode is connected to the anode of the fourth rectifying diode and the LED a cathode of the group, the cathode of the fourth rectifying diode is connected to the anode of the first rectifying diode; and an alternating current power source is electrically connected to the first rectifying diode of the rectifying diode group The anode and the cathode of the third rectifying diode H. The AC power source package M374652 includes a positive cycle power supply and a negative cycle power supply, the rectifying diode group causing the LED assembly to be in the positive cycle power supply and the negative The periodic power supply is turned on. [Embodiment] Refer to FIG. 2 and 3 'in FIG. 2 The present embodiment is intended to illustrate the creation of a preferred embodiment, FIG. 3 authoring system of the present embodiment of the system architecture of a preferred embodiment FIG. As shown in the figure, the high-reliability and long-life AC light-emitting diode device of the present invention includes a rectifying one-pole group 21, a light-emitting diode group 22, and an alternating current power source 20. The light-emitting diode group 22 is composed of a plurality of serially connected light-emitting diode microcrystals. It preferably comprises 48 serially connected light-emitting diode micro-crystals 2201~2248, the 48 light-emitting diodes. The bulk microcrystals "οι~2248 are fabricated in a wafer 51. As shown in Fig. 4, the layout of the light-emitting diode microcrystals 2201 to 2248 is a non-matrix arrangement (a in Fig. 4), Or matrix arrangement (B of Figure 4). Next, please refer to FIG. 3 and FIG. 5, the rectifier diode group 21 includes four rectifying diodes, which are first, second, third and fourth respectively. The rectifier diodes 211 to 214, the first to fourth rectifier diodes 211 to 214 of the rectifier diode group 21 are respective diode elements, and the diode elements are high voltage rectifier diodes. Preferably, the rectifying diode group 21 and the LED group 22 are integrated in a package wafer 3, and are bonded by the same holder 31. As shown in the figure, the rectifying diode group 21 is The first, second, third, and fourth rectifying diodes 2 1 1 to 2 14 and the LED group 22 are disposed on the same 6-frame 31, and are made of a glue 32. The package is packaged to form a package structure together. Please continue to refer to FIG. 2 and FIG. 3. The LED group 22 of the present invention is composed of 48 LED dimorphs 2201~2248, and the calculation method is The starting voltage of the light-emitting diode microcrystals 2201 to 2248, the starting voltage of the rectifying diodes 211 to 214, and the voltage of the alternating current power source 2 are calculated. In the embodiment, the voltage supplied by the alternating current power source 20 is 11 〇V, which is the root mean square value, whose peak value is the root mean square value multiplied by the root number two, that is, 156 volts. The rectifying diode provided in this embodiment has a starting voltage of 1 volt, and the light emitting body is slightly fused. The starting voltage of the die is 3.2 volts. When the AC power supply 2〇 is in a positive cycle, the current flows through the first rectifying diode 2 π, the light emitting diode group 22, and the third rectifying diode 213; When the 〇 is in the negative half cycle, the current flows through the second rectifying diode 212, the illuminating diode group 22, and the fourth rectifying diode 214. The current of the AC power source 20 flows through both positive and negative periods. a rectifying diode, so there is a voltage drop of 2 volts, from which the luminescence can be calculated The number of microcrystals of the light-emitting diode which can be included in the polar body group 22 is: (156-1*2)/3.2=48, and may also contain 48 light-emitting diode microcrystal grains. 48 light-emitting diodes The body microcrystals 2201 to 2248 are connected in series to have an anode 22a and a cathode 22b. The cathode 21 lb of the first rectifying diode 211 is connected to the cathode 212b of the second rectifying diode 212 and the light emitting diode group. The anode 22a of the second rectifying diode 212 is connected to the cathode 213b of the third rectifying diode 213, and the anode 213a of the third rectifying diode 213 is connected to the anode 214a of the fourth rectifying diode 214. The cathode 22b of the light-emitting diode group 22 and the cathode 214b of the fourth rectifier diode 214 are connected to the anode a of the first rectifying two M374652 electrode body 211. The AC power source 20 is electrically connected to the anode 211a of the first rectifying diode 211 and the cathode 213b of the third rectifying diode 213. The high reliability and long-life AC light emitting diode provided by the present invention When the AC power source 20 is in the positive cycle, the first rectifying diode 211 and the second rectifying diode 213 are turned on, so that the LED group 22 can also be turned on. Similarly, when the AC power source 20 is in the negative cycle, the second rectifying diode 2 12 and the fourth rectifying diode 214 are turned on, so that the LED group 22 can be turned on. Therefore, the rectifying diode group 2 1 causes the LED group 22 to be turned on in both the positive cycle power supply and the negative cycle power supply, so that the light-emitting diode micro-crystals 2201 to 2248 of the light-emitting diode group 22 are all Light up. Next, when the AC power source 20 is in a positive cycle, the current flows through the first rectifying diode 2U, the LED group 22, and the third rectifying diode 213. At this time, the second rectifying diode 212, The four rectifier diodes 214 are not turned on and will be subjected to reverse bias; when the AC power source 2 is in the negative half cycle, the current flows through the second rectifying diode 212, the LED group 22, and the fourth rectification. The diode 214, at this time, the first rectifying diode 2n and the third rectifying diode 213 are not turned on, and will be subjected to reverse bias. The high-reliability and long-life AC light-emitting diode device provided by the present invention has a rectifying diode 211 to 214 capable of withstanding a reverse bias of 600-1000 volts or more, and its reverse leakage current can be reduced to several The ya grade ° is the reason why the rectifying diodes 2丨丨~2丨4 provided by this creation can avoid the micro-crystals of the LEDs arranged on the original AC light-emitting diodes. In the case of the reverse bias high voltage collapse leakage current phenomenon, the overall luminescence lifetime can be extended and the reliability can be improved. 8 M374652 However, the above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments. [Simple description of the diagram] Figure 1 is a diagram of a conventional AC light-emitting diode architecture. Figure 2 is a schematic illustration of a preferred embodiment of the present invention. 3 is an architectural diagram of a preferred embodiment of the present invention. Fig. 4(A) is a schematic view showing the non-matrix arrangement of the light-emitting diode microcrystals of a preferred embodiment of the present invention. Fig. 4(B) is a schematic view showing the matrix arrangement of the light-emitting diode microcrystals of a preferred embodiment of the present invention. FIG. 5 is a schematic view showing a solid crystal wiring of a stent according to a preferred embodiment of the present invention. [Description of main components] 10,20 AC power supply a~e Light-emitting diode section 21 Rectifier diode group 22 Light-emitting diode group 211-214 Rectifier diodes 211a to 214a Rectifier diode anode 211 b~ 214b rectifier diode cathode 2201~2248 light-emitting diode micro-crystal 22a light-emitting diode group anode 22b light-emitting diode group cathode pole 3 package wafer 31 bracket 32 sealant 51 wafer 9

Claims (1)

M374652 六、申請專利範圍: 1. 一種高可靠度及長使用期之交流發光二極體裝 置,包括: 一發光一極體組,係由複數個串接之發光二極體微晶 粒所組成,包含有一陽極及一陰極; 一整流二極體組,包括第一、第二、第三及第四整流 一極體,該第一整流二極體之陰極連接該第二整流二極體 之陰極及該發光一極體組之陽極,該第二整流二極體之陽 極連接該第二整流一極體之陰極,該第三整流二極體之陽 極連接該第四整流二極體之陽極及該發光二極體組之陰 極,該第四整流二極體之陰極連接該第一整流二極體之陽 極;以及 一交流電源’其係電性連接至該整流二極體組之該第 一整流二極體之陽極及該第三整流二極體之陰極; 其中,該交流電源包含有一正週期電源及一負週期電 源,該整流二極體組係致使該發光二極體組於該正週期電 源及該負週期電源均被導通。 2. 如申請專利範圍第1項所述之高可靠度及長使用期 之交流發光二極體裝置,其中,該發光二極體組之複數個 發光二極體微晶粒係製作在一晶片上。 3. 如申請專利範圍第1項所述之高可靠度及長使用期 之交流發光二極體裝置,其中,該整流二極體組之第—至 第四整流二極體係為各別之二極體元件。 M374652 4_如申請專利範圍第3項所述之南可靠度及長使用期 之交流發光二極體裝置,其中,該各別之二極體元件為古 壓整流二極體。 5. 如申請專利範圍第1項所述之高可靠度及長使用期 之交流發光二極體裝置,其中,該發光二極體組及該整流 二極體組係整合於一封裝晶片中。M374652 VI. Patent Application Range: 1. A high-reliability and long-life AC light-emitting diode device, comprising: a light-emitting diode group consisting of a plurality of serially connected light-emitting diode microcrystals An anode and a cathode are included; a rectifier diode set including first, second, third, and fourth rectifying poles, and a cathode of the first rectifying diode is coupled to the second rectifying diode a cathode and an anode of the light-emitting diode group, an anode of the second rectifying diode is connected to a cathode of the second rectifying body, and an anode of the third rectifying diode is connected to an anode of the fourth rectifying diode And a cathode of the LED group, a cathode of the fourth rectifying diode is connected to an anode of the first rectifying diode; and an AC power source is electrically connected to the rectifying diode group An anode of the rectifying diode and a cathode of the third rectifying diode; wherein the alternating current power source includes a positive period power supply and a negative period power supply, the rectifying diode group causing the illuminating diode group to be Positive cycle power supply and the Cycle of the supply are turned on. 2. The high-reliability and long-life AC light-emitting diode device according to claim 1, wherein the plurality of light-emitting diode micro-crystals of the light-emitting diode group are fabricated on a wafer on. 3. For the high-reliability and long-life AC-emitting diode device described in claim 1, wherein the first to fourth rectifying diode systems of the rectifying diode group are two Polar body component. M374652 4_ The AC reliability diode device of the south reliability and the long service life as described in claim 3, wherein the respective diode elements are paleo-voltage rectifier diodes. 5. The high-reliability and long-life AC light-emitting diode device according to claim 1, wherein the light-emitting diode group and the rectifier diode assembly are integrated in a package wafer. 6. 如申請專利範圍第5項所述之高可靠度及長使用期 之交流發光二極體裝置,其中’該發光二極體組之複數個 發光二極體微晶粒係為非矩陣式排列。 二如申請專利範圍第5項所述之高可靠度及長使用期 之父板發光一極體裝置’其十,該 二極體組係於-支架上進行^了線。^及該整机6. The high-reliability and long-life AC light-emitting diode device described in claim 5, wherein the plurality of light-emitting diode micro-grains of the light-emitting diode group are non-matrix arrangement. 2. For example, the high-reliability and long-life period of the parent-plate light-emitting one-pole device described in claim 5, the diode set is on the bracket. ^ and the whole machine
TW098218531U 2009-10-08 2009-10-08 High reliability and long lifetime ac LED device TWM374652U (en)

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